The Effect of Equal-Channel Angular Pressing Processing on Microstructural Evolution, Hardness Homogeneity, and Mechanical Properties of Pure Aluminum

2020 ◽  
Vol 14 (2) ◽  
pp. 113-125
Author(s):  
A.I. Alateyah ◽  
Mohammed Alharbi ◽  
H. Abd El-Hafez ◽  
W.H. El-Garaihy
Keyword(s):  
Mechanical Properties ◽  
Equal Channel Angular Pressing ◽  
Microstructural Evolution ◽  
Pure Aluminum ◽  
Angular Pressing

Microstructures and Mechanical Properties of Fcc Pure Metals with Different Stacking Fault Energies by Equal Channel Angular Pressing

2011 ◽  
Vol 682 ◽  
pp. 193-203 ◽  
Author(s):  
Yue Zhang ◽  
Jin Qiang Liu ◽  
Jing Tao Wang ◽  
Zhi Bin Wu ◽  
Fan Liu
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Equal Channel Angular Pressing ◽  
Pure Aluminum ◽  
Pure Copper ◽  
Pure Nickel ◽  
Strain Level ◽  
Angular Pressing ◽  
Microstructures And Mechanical Properties ◽  
Strain Increase

In the present work 99.98% commercial pure copper, 99.5% commercial pure nickel and 99.5% commercial pure aluminum were imposed on high strain levels of ~24, ~8 and ~44 by equal channel angular pressing (ECAP) via route Bc, respectively. Microstructures and mechanical properties are investigated by TEM observations, tensile tests and microhardness tests. It shows that grain sizes of pure copper, pure nickel and pure aluminum has been severed refined from several tens of microns into several hundreds of nanometers after ECAP processing, however, microstructure of copper are mainly consisted of equiaxed (sub) grains with illegible grains/ (sub) grains boundaries after processed by ECAP, while it is featured as lamellar boundaries in that of pure nickel and as elongated grains in that of pure aluminum underwent a same strain level of ECAP. Results of mechanical properties show that yield strength and microhardness increase as strain increase up to a max value in copper, and then begin to decrease slightly, while mechanical properties of the other two increase as strain increases in nickel up to a strain level of ~12, and as in aluminum, yield strength and microhardness increase as strain increase in a relative low strain level, and then reach an saturation value.

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